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| author | Sudeep Holla <sudeep.holla@arm.com> | 2016-10-28 10:45:28 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-10 17:30:53 +0100 |
| commit | fac51482577d5e05bbb0efa8d602a3c2111098bf (patch) | |
| tree | 0cd98898970e87486aab524e09a080231aa2bf7a /drivers/base/cacheinfo.c | |
| parent | driver-core: add test module for asynchronous probing (diff) | |
| download | linux-fac51482577d5e05bbb0efa8d602a3c2111098bf.tar.xz linux-fac51482577d5e05bbb0efa8d602a3c2111098bf.zip | |
drivers: base: cacheinfo: fix x86 with CONFIG_OF enabled
With CONFIG_OF enabled on x86, we get the following error on boot:
"
Failed to find cpu0 device node
Unable to detect cache hierarchy from DT for CPU 0
"
and the cacheinfo fails to get populated in the corresponding sysfs
entries. This is because cache_setup_of_node looks for of_node for
setting up the shared cpu_map without checking that it's already
populated in the architecture specific callback.
In order to indicate that the shared cpu_map is already populated, this
patch introduces a boolean `cpu_map_populated` in struct cpu_cacheinfo
that can be used by the generic code to skip cache_shared_cpu_map_setup.
This patch also sets that boolean for x86.
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/cacheinfo.c')
| -rw-r--r-- | drivers/base/cacheinfo.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c index e9fd32e91668..ecde8957835a 100644 --- a/drivers/base/cacheinfo.c +++ b/drivers/base/cacheinfo.c @@ -106,6 +106,9 @@ static int cache_shared_cpu_map_setup(unsigned int cpu) unsigned int index; int ret; + if (this_cpu_ci->cpu_map_populated) + return 0; + ret = cache_setup_of_node(cpu); if (ret) return ret; |